• Walyering-7 has completed its flow testing program into the Walyering production
facility with a maximum recorded gas rate of 14 TJ/d and liquid rate of 900 bbls/d
of condensate.
• Measurement of gas composition shows on specification low impurity gas with an
elevated energy conversion factor and significantly higher condensate gas ratio
than expected.
Strike Energy Limited is pleased to provide the results of the Walyering-7
(W7) appraisal well flow testing program at the currently producing Walyering gas field within
Production Licence L23 (100% net to Strike) in the Perth Basin.
Strike has conducted flow testing operations at Walyering-7 over the last 40 days taking samples,
pressures and performing build up tests of individual reservoir units. Productive gas charged
reservoirs were observed in the Cattamarra Formation in the A-Sands (from 3,240m MD) with
the D-Sands remaining to be tested.
The tests confirmed the presence of a new movable conventional gas and condensate
accumulation. The gas samples taken showed very low impurities consistent with the Walyering
production stream, producing a higher heating value and a substantially higher condensate gas
ratio. These are both positive results, leading to an elevated energy conversion factor and higher
daily condensate production. The condensate has been analysed and laboratory work confirms
that the specification of the condensate is in line with the existing production stream.
The test covered 7 zones which were completed behind individual sliding sleeves. Maximum gas
and condensate rates over the 40-day period were 14 TJ/d and 900 bbls/d respectively. A 6-
hour test of all zones flowed at 4 TJ/d and 900 bbls/d of condensate on a 24/64” choke. When
configured to only 4 open zones that were identified as gassier on the petrophysics, W7 flowed
at 7 TJ/d and 400bbls/d of condensate on a 20/64” choke. Analysis of testing data is ongoing in
order to understand the best configuration to maximise gas production and to optimise the
volume of condensate produced.
All gas and condensates produced during the testing phase have been sold into Strike’s existing
marketing arrangements.
Walyering-7 will now be shut in and prepare for the permanent tie into the Walyering gas
processing facility, which is expected to be completed before the end of the quarter. The
slickline unit will now move to Walyering-6 where a test of some of the deeper prospective
reservoirs will occur.
Strike’s Managing Director and Chief Executive Officer said
“This is a pleasing result from the Walyering-7 appraisal well, unlocking new production and
throwing up some unexpected condensate and heating value results. With the new volume of
condensate potential from Walyering, Strike is putting in renewed efforts to identify a higher
margin opportunity to sell and or consume the condensate locally in Western Australia.
We look forward to testing of the lower zones at W6 shortly and returning to perforate the DSands at W7 during the planned shutdown and inspection in Q4-CY24.”
The production of gas and condensates and assessment of deliverability into the facility will form
key inputs to be used in RISC Advisory Pty Ltd’s independent assessments which will conclude
after the proposed Walyering-6 activities.
About the Walyering-7 Appraisal Campaign
The W7 well was drilled from a surface location co-located with the Walyering gas processing
facility (Lat: 30° 42' 45.301" S, Long: 115° 28' 30.408" E) directionally to the east into a fault
compartment north-east of the producing Walyering-5 structure.
This announcement is authorised for release by the Managing Director and Chief Executive
Officer in accordance with the Company’s Continuous Disclosure Policy.
About RISC Advisory Pty Ltd
RISC is an independent advisory firm offering the highest level of technical and commercial
advice to a broad range of clients in the energy industries. This includes independent
assessment of assets in line with ASX requirements